Locomotive-boiler.



No. 769,623- PATENTED SEPT. 6, 1904, J. MUHR. LOGOMOTIVE BOILER.

APPLICATION FILED MAR. 4. 1904.

N0 MODEL.

INVENTOR :Jaepfi Jfukr m 8 m w W ATTORNEYS Patented September 6, 1904.

JOSEPH MUHR, OF DUNKlRK, FEW YORK.

LOCOMOTlVE-BOILER.

SPECIFICATION forming part of Letters Patent No. 769,623, datedSeptember 6, 1904.

Application filed March 4, 1904. Serial No. 196,513. lNo model.)

To all writ/mt it may concern:

Be it known that I, JOSEPH MUHR, a citizen of the United States, and aresident of Dunkirk, in the county of Chautauqua and State of New York,have invented new and useful Improvements in Locomotive-Boilers, ofwhich the following is a full, clear, and exact deseription.

The object of the invention is to provide certain new and usefulimprovements in locomotive-boilers whereby an even draft is producedthrough all the tlues and a ready escape is had of the smoke and gasesfrom the fines to the smoke-stack without carrying cinders through thestack and at the same time a free exhaust of the steam from the engineis had without danger of back pressure.

The invention consists of novel features and parts and combinations ofthe same, as will be more fully described hereinafter and then pointedout in the claims.

A practical embodiment of the invention is represented in theaccompanying drawings, forming a part of this specification, in whichsimilar characters of reference indicate corresponding parts in bothviews.

Figure 1 is a longitudinal sectional side elevation of the improvementon the line 1 1 of Fig. 2, and Fig. 2 is a transverse section of thesame on the line 2 2 of Fig. 1.

In the shellA of the boiler are arranged in the usual manner flues B,terminating at their forward ends in a front liuesheet O, dischargingthe smoke and gases into a funnel-shaped conduit 1), arranged in asmoke-box E, supporting a smoke-stack F. The lower portion F of thesmoke-stack F is extended a distance down into the smoke-box E, and thesaid lower portion has its lower end terminating in a contractedterminal F, into which extends the ex haust-nozzle G of the engine, aflange G on the said exhaust-nozzle closing the stack to the smoke-box.The bottom 1) of the conduit .l) extends upwardly and forwardly andconnects with the lower portion F of the stack a distance immediatelyabove the contracted terminal F and the rear top portion D of theconduit is formed by the rear top part of the l l l l l l l smoke-box,and the forward top portion D of the conduit 1) is formed by anenlargement of the stack, as will be readily understood by reference toFig. 1.

By the arrangement described all the smoketlues B discharge the smokeand gases into the base end of the funnelshaped conduit 1), in which thesmoke and gases travel upward and forward to linally pass into thesmoke-stack F above the discharge end of the exhaustnozzle G. Theentrance end of the funnelshaped conduit into the stack is about thesame in diameter as that of the stack to insure a ready escape of thesmoke and gases through the stack. 'hen the locomotive-engine isworking, the exhaust-steam passing up the nozzle and stack creates asuction in the conduit 1) and in the smoke-fines B to insure a readytravel of the smoke and gases through the smokc-flues, the conduit, andthe stack, together with the exhaust-steam passing axially up in thestack.

it will be seen that by the arrangement described the discharge end ofthe exhaust-nozzle G may be made of considerable size that is, somewhatlarger than exhaust-nozzles heretofore used--and provided with adiaphragm. Thus a free escape of the exhauststeam is had, andconsequently back pressure by the exhaust-steam is prevented.Furthermore, the exhaust-steam discharged into the stack F does notcreate a very strong draft in the smoke-Hues B, and consequently veryfew, if any, cinders are drawn through the smoketlues into the conduit.Cinders that are, however, drawn into the conduit are prevented frompassing into the stack F by a transverse screen H, held in the baseportion of the conduit, as plainly indicated in Fig. 1. From the bottomof the base end of the conduit 1) leads a pipe I for carrying off anycinders that may strike against the screen Hand then drop down into thelower end of the conduit D, from which they pass by the pipe 1 to asuitable place of discharge.

From the foregoing it will be seen that not only a free escape of theexhaust-steam and the steam and gases is had, but the device asdescribed also serves as a spark-arrester to prevent sparks from passingout of the stack of the locomotive.

Having thus described my invention, I claim as new and desire to secureby Letters Patent 1. The combination with a locomotive-boiler and itssmoke-box, of a stack extending into the smoke-box, an exhaust-nozzleconnected with the lower end of the stack and forming therewith acontinuous laterally-closed passage, and a conduit leading directly fromthe flue-sheet of the boiler into the side of the stack above theexhaust-nozzle.

2. The combination with alocomotive-boiler and its smoke-box, of a stackextending into the smoke-box, an exhaust-nozzle connected with the lowerend of the stack, and a conduit surrounding the flue-openings of theboiler flue-sheet and opening into the side of the stack above theexhaust-nozzle.

3. The combination with a locomotive-boiler and its smoke-box, of astack extending into the smoke-box, an exhaust-nozzle connected with andclosing the lower end of the stack, a conduit leading directly from theflue-sheet of the boiler into the side of the stack above theexhaust-nozzle, and a screen situated across the conduit.

4. The combination with a locomotive-boiler and its smoke-box, of astack extending into the smoke-box, an exhaust-nozzle connected with thelower end of the stack, and a conduit surrounding the flue-openings ofthe boiler flue-sheet and opening into the side of the stack above theexhaust-nozzle, the lower wall of the conduit being downwardly inclinedand provided at its lower extremity with a discharge-opening.

5. The combination with a locomotive-boiler and its smoke-box, of astack extending into the smoke-box, an exhaust-nozzle closing the lowerend of the stack, and a conduit leading from the flue-sheet of theboiler into the side of the stack above the exhaust-nozzle.

6. The combination with a locomotive-boiler and its smoke-box, of astack extending into the smoke-box and having a reduced lower end, anexhaust-nozzle closing said end of the stack, and a conduit leading fromthe fluesheet of the boiler into the side of the stack above theexhaust-nozzle. A

7. A locomotive-boiler having a smoke-box, a stack having its lowerportion extending downward in the smoke-box, the lower terminal of thestack being contracted, an exhaustnozzle connected with the saidstack-terminal, and a funnel-shaped conduit surrounding theflue-openings of the boiler and having its bottom extending upwardly andforwardly, the rear or base end of the conduit receiving the smoke andgases from the boiler-fines and the upper or apex end of the conduitopening into the stack above the contracted terminal there In testimonywhereof I have signed my name to this specification in the presence oftwo subscribing wltnesses.

JOSEPH MUHR.

Witnesses:

JOHN D. GAsT, FRANK DOPHER.

